<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>绝对定位</title>
  <link rel="stylesheet" href="css/common.css">

  <link rel="stylesheet" href="css/abs.css">
</head>

<body>
  <div class="box01 border-box">绝对定位参照物</div>

  <div>
    <div class="border-box box02">没有约束的绝对定位</div>
  </div>

  <div class="border-box box03-container">
    <div class="border-box box03">受容器控制的绝对定位</div>
  </div>

  <div class="box04-container border-box">
    <div>1</div>
    <div>2</div>
    <div>3</div>
  </div>

  <div class="box05-container">
    <div>内容层</div>
    <div>3</div>
  </div>

  <div class="box06-container border-box">
    <div>内容层</div>
    <div>遮挡层</div>
  </div>


</body>

</html>